Hot water heating device



Nov. 1, 1938. A. B. TRENcAvl-:L 2,135,367

HOT WATER HEATING DEVICE v Filed Feb. 12, 1957 2 smug-snaai 1 Vfl/lillll/ll/Ill111ll111Il'lllulr111/11111111lllllllllIl/rlllll,111111111111111lll/llnl//l/lll/ll 4 INV ENT OR. alberi 9. Jrencavel BY h /-S ATTORNEY.

N0V 1, 1938. A B. TRENCAVEL 2,135,367

HOT WATER HEATING DEVICE Filed Feb. 12, 1957 2 sheets-sneu 2 ad Z5 Lg/ l n' INV ENT OR,

3: alberi-QB. faence-rel ,m ATTORNEY.

Patented Nov. 1, 1938 UNITED STATES PATENT OFFICE HOT WATER HEATING DEVICE Waffe Application February 12, 1937, Serial No. 125,396

1 Claim.

This invention relates to a system of utilizing the deflected waste heat from sources such as stoves, coffee urns, broilers and ovens of various types.

Broadly, it is an object of this invention to provide a device for the heating of water and to create a more rapid circulation of the heated water so that .a greater amount of hot Water can be stored in a tank during a given period.

More specifically, it is an object of this invention to provide for a type of heating device which will t within the average known stove, range, oven, broiler, coife urn and the like, so that no material variation need be made to such article 15 in order to make an installation of the heating device.

Another object of this invention is to cause a progressive and continuous movement of water in tthe process of being heated by utilizing the deflected and refracted heat in stoves, ovens, ranges and the like.

Another object of this invention is to produce sufficient hot water, virtually without cost, by utilizing the waste heat of stoves, ovens, ranges and the like.

Another object of this invention is to increase the heat absorbing surface of the device in order to increase the temperature of the water in the process of being heated and aiding such water to travel faster along heat pressure lines in order to more rapidly ll a rstorage tank.

Another object of this invention is to provide a device having an inlet and outlet along tangential lines so that the cold water owing in and the hot water leaving the device for the storage tank will not be retarded by any abrupt angles in the water pipe and Will move in the direction of the tangent created by the water pipe and the coil thus reducing any resistance in the flow.

This invention comprises a novel construction, a combination of elements and an arrangement of parts and the device possesses characteristics, features, properties and relation of elements all of which will be exemplified in the following detailed description. For a fuller understanding of the nature and objects of this invention, reference is had to the following detailed description in connection with the ,accompanying drawings, in which:

Figure 1 is a top view, partly in section, of a Igas range containing the heating device used 'in connection with the invention.

Figure 2 is a vertical section taken through a portion of the gas range, along line 2-2 of Figure 1.

Figure 3 is a top view of the circular housing of the water coil.

Figure 4 is a top view of the water coil which is incased within the circular housing.

Figures 5 and 6 are cross sections taken through the circular housing, along lines 5 5, 6 6, respectively of Figure 3.

Figure 7 is a greatly enlarged cross section taken through the circular housing, along line 'I-I of Figure 3.

Figure 8 is a detail of a portion of the circular housing.

Referring to the drawings, Ill represents the `j gas range frame, I I the gas burner in said frame, I2 represents the refractory brick foundation around the gas burner and underneath the circular housing I3. The gas range top I4 is supported by the gas range frame Il) above the circular housing and the gas burners at sufijcient distance to get the maximum benefit from the name of the gas burner II.

The gas range frame I0, surrounds the air chamber I5 in which combustible gases accumulate, said air chamber lying between the refractory brick foundation I2 and the gas range top When the burner il is in operation, a column of air enters the air chamber I 5 through air passage I6 in the gas range frame I0 and thence through the air passages Il of the gas burner II, the heated combustible gases collecting in the air chamber I5 .and passing thence into the lateral flues I8, thence through the apertures I9 in the said lateral flues I8 and thence passing through the vertical ues 20 in the regular manner well known in the manufacture of stoves, gas ranges and the like.

Within the combustion chamber I5 in which the combustible gases accumulate, the circular housing I3 rests upon but is not attached to the refractory brick foundation I2, said housing I3 being supported by the water coil 23 which is connected to piping 25 and 26 coming from and leading to a water tank, said piping 25 and 26 being connected to the terminals of the water coil 23 by streamlined couplings 2| an-d 22, as shown in Fig. 1. The housing may be oval, square or any other suitable shape. The water coil 23 is solidly incased and embedded within the housing I3, which completely surrounds the gas burner II and lies above the said burner -II and within the combustion chamber I5 so that when the gas burner II is in operation the heat of the flame from the saidlgas burner will be deilected from the bottom of thegas range top Hand'be deflected toward the circular housing I3 and the refractory brick Vfoundation I2 upon which, it rests so that the deflected heat will be absorbed by the concentric, circular and continuous nflike ridges V2 4 radiating from the circular housing I3, not onlyv directly but also YindirectlyY from the refraoted heaty of the refractory brick foundation I2.

The circular housing I3 may be cast from 'ai highly heated absorbing metal such as aluminum,

coppen, nickel, antimony or alloys comr'arising.V such metals or compositions of such metals.` 'The Water coil 23, which is firmly andcompletely incased within the said circular housing I3 is formed of a suitable'non-corrosivenmetal, sucfhi' as, copper, or the like; the coils Yof said water coillbeingrwound one above the other in a Ver-r tical helicoidal manner. y Y Y The Vinlet of the helicoidal water coil23, is below and the outlet is above, since the water is hot when it leaves the Water coil'23; hot water having a tendency to rise thus furtheringV the acceleration of the water flow. The inlet and the outlet of the Water coil are purposely placed in a tan-- gent tothe path of the ihelicoidal water coil in l order to reduce the resistanceto a minimum of the inowing cold Water and the' outflowing hot water so as tov eliminate any movementV against any angular pipe joining. v Y

A preferred means Yof solidlyandlfirmly incasing the helicoidal'water coil'23 would beto place the said water coil Within'the casting mould so that it will act as a core and the metal which forms the circular housing I3 is cast around the water coil 23jso that rthe hardenedY casting will have within the center thereof, the rwater coil 23 2,135,367 Y e l vcreep producedV by the concentrated'heat along The heat which isdeflected from the bottom Y of the gas range top I4 is gathered by the fm- Vlike ridges 24 which are directly in the pathboth of the deflected and the refracted heat. The collected heat creeps along the n-like ridges'ZlIk in a circrular'manner and toward the core of the housing and gathers in thermal or heat zones,

Vsuch heat zones being formed atthe depressions between the iin-like ridges 24. The thermal the thermal Zone at the depressions of the fin- 'like ridges 24 is now carried throughthe metal Y structure of the helicoidal housing I3 and thencerrr carried tothe inner surface of the -water coil -23, producing a continuous thermal heat Zone which is a replicaV of that produced by the concentric fin-like ridgesrrof the housing I3. This -continuous heat zone forms a thermal path around theV inner surface of the water coil 23..

The heat which is retracted from the refractory brick foundation is of a lesser intensity-due kto heat loss by absorption of the brick Yfoundation. The action of this refracted heat upon Vthe lower part of the iin-like ridges 24, produces' the Y vsame thermal creep but of lesser intensity. However, the refracted heat bing oflesser intensity than the deflected heat from the bottom of the top of thegas range I4 it follows that the ther'V mal path'around the inner surface of therwater coil Y23 will'have a greater temperatureat the upper part than at the lowerpart.

Y :miY This differ ence of temperaturebetween the 'upper and lower part of the thermal path,Y produces `a thermal thrust Vor stress in the vmetallic structureV along the heated path.

The iatent heat reieaseiby the change interfi-V perature' of the water createsa'statefof turbu-v u len'ce in the waterY causing acceleration of flow of the heatin'the water of the water coil and thence transmitted to the water inthe storage tank.

I claim: n n y A In aV hot water heatingunit, a helical/coilof pipe,`a cast metal housing vembedding said coil,

said coil havingan inlet and an outlet'leading tangentially'to and from same, and n-like ridges projectin'gradially around the perimeter of saidv Y A housing.V

ALBERT B.y TRENCAVEL. f ,5 

